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Topic Review
Polysaccharide Sequence Determination
NMR analysis combined with statistical modeling offers a useful approach to investigate the microstructures of biobased polymers. In particular, this approach may be used to study the microstructures of polysaccharides. If the polysaccharides are composed of two or three monosaccharide units, and the NMR spectral features are sensitive to the different sequence placements of these units, then a detailed analysis of a polysaccharide (or its fractions) can be made by NMR with the help of statistical modeling.   
  • 112
  • 12 Mar 2024
Topic Review
Spectroscopy in Plant-Based Foods and Beverages
Near-infrared (NIR) spectroscopy and machine vision systems, such as hyperspectral imaging (HSI), are among the most successful technologies applied for the quality evaluation and safety inspection of several commodities.
  • 158
  • 28 Dec 2023
Topic Review
Practical Aspects of Nuclear Magnetic Resonance Application
Nuclear magnetic resonance (NMR) is a primary method of measurement according to metrology standards. It has been proven to have good reproducibility. NMR spectra are evaluated numerically, including chemical shifts, coupling constants, and signal integrals, which lead to quantitative results.
  • 171
  • 13 Dec 2023
Topic Review
Raman Spectroscopy for Monitoring of Photopolymerization Systems
Raman spectroscopy provides the flexibility and resolution needed for in-situ and real-time monitoring of a wide variety of photopolymerization systems, as well as characterization of polymers resulting from these inherently fast and energy-efficient reactions.
  • 100
  • 27 Sep 2023
Topic Review
Quaternary Ammonium Gemini Surfactant 12-6-12
Gemini surfactants are a modern variety of surfactants with unique properties and a very wide range of potential applications. Hexamethylene-1,6-bis(N-dodecyl-N,N-dimethylammonium bromide) is one such representative compound that is a better alternative to a single analogue. It shows excellent surface, antimicrobial, and anticorrosion properties. With a highly efficient synthetic method and a good ecological profile, it is a potential candidate for numerous applications, including biomedical applications.
  • 134
  • 14 Sep 2023
Topic Review
Signal-Amplifying Substrates for Surface-Enhanced Raman Scattering-Based Bioassays
Surface-enhanced Raman spectroscopy (SERS) has become a powerful detection scheme for many applications, particularly bioassays, due to its unique strengths, such as its ultrasensitive performance. Due to the development of various SERS substrates, more SERS-based bioassays with improved sensitivity and reproducibility have been designed and manufactured. 
  • 149
  • 24 Aug 2023
Topic Review
Advanced Spectroscopy Techniques with Chemometrics in Food Analysis
The growing world population is increasing the demand for food in multiple ways, which is leading to a higher demand for safety and quality control of commercialized products. Food can become contaminated by chemicals and physical substances through accidental or intentional means. Advanced spectroscopy techniques paired with chemometric tools are crucial in analyzing food by providing a fast, non-destructive, and efficient means of obtaining detailed information about food samples. This information can be used to improve the quality, safety, and authenticity of food products. 
  • 472
  • 31 Jul 2023
Topic Review
Noise in Designing a Transmission Electron Microscopy Laboratory
The proper design of a transmission electron microscopy facility is mandatory to fully use the advanced performances of modern equipment, capable of atomic resolution imaging and spectroscopies, and it is a prerequisite to conceive new methodologies for future advances of the knowledge. When quantitatively evaluating the effects of noise on TEM (Transmission Electron Microscopy)/STEM (Scanning Transmission Electron Microscopy) experiments, there are three main parameters to be considered: spatial resolution, signal amplitude, and signal-to-noise ratio. All of them can be negatively affected by the presence of external sources of noise, whose removal is crucial for TEM/STEM experiments to exploit the highest instrumental performance and capabilities. All noise sources of interest and relevant mitigation approaches are analyzed in detail. 
  • 489
  • 09 May 2023
Topic Review
Infrared Spectroscopy in Quantification of Food Bioactive Compounds
Infrared spectroscopy (wavelengths ranging from 750–25,000 nm) offers a rapid means of assessing the chemical composition of a wide range of sample types, both for qualitative and quantitative analyses. Its use in the food industry has increased significantly and it is now an accepted analytical technique for the routine analysis of certain analytes. Furthermore, it is commonly used for routine screening and quality control purposes in numerous industry settings, albeit not typically for the analysis of bioactive compounds. 
  • 260
  • 06 May 2023
Topic Review
Near-Infrared Hyperspectral Imaging Techniques for Non-Destructive Quality Assessment
Hyperspectral imaging (HSI) is one of the most often used techniques for rapid quality evaluation for various applications. It is a non-destructive technique that effectively evaluates the quality attributes of root and tuber crops, including yam and cassava, and their food products. Hyperspectral imaging technology, which combines spectroscopy and imaging principles, has an advantage over conventional spectroscopy due to its ability to simultaneously evaluate the physical characteristics and chemical components of various food products and specify their spatial distributions. HSI has demonstrated significant potential for obtaining quick information regarding the chemical composition of the root and tuber, such as starch, protein, dry matter, amylose, and soluble sugars, as well as physical characteristics such as textural properties and water binding capacity.
  • 254
  • 25 Apr 2023
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